Home / 28,399.59-39,191.69-15,653.23

Finding the Fourth Proportional to 28,399.59, 39,191.69 and 15,653.23

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Solution

The fourth proportional to 28,399.59, 39,191.69 and 15,653.23 is: 21,601.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,399.59 : 39,191.69 = 15,653.23 : x
  2. Step 2: Convert to fraction form
    28,399.59/39,191.69 = 15,653.23/x
  3. Step 3: Cross multiply
    28,399.59x = 39,191.69 × 15,653.23
  4. Step 4: Simplify right side
    28,399.59x = 613,476,537.66
  5. Step 5: Solve for x
    x = 613,476,537.66/28,399.59
  6. Step 6: Final answer
    x = 21,601.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.